For a nice, sit down dinner, Six Penn is the closest option. Salonika's has good Greek food in an old diner type of setting. If you are able to walk a bit further, Market Square has a lot to choose from. There is also a relatively new BRGR with amazing burgers and shakes.
I think Six and Penn
Bar Tako & Butcher and the Rye are both awesome and right across the street
Salonika's ( love Galaktoboreko for dessert there) and Mike and Tony's.
Emporio is a meatball place on Penn Ave, and my son loves it. Pork and Beans is a BBQ place that is also pretty kid friendly.
There are too many to name.
To many to name, just walk around and discover
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